Malicious PDF — malware analysis report

Static analysis result for SHA-256 b507761fb0fb1c2c…

MALICIOUS

PDF

33.0 KB Authoring application: pstoedit
MD5: 7b651fde720750b4269d247ea995cad3 SHA-1: addd21d9713ce415945661f4028cd7a6fcc9d9d9 SHA-256: b507761fb0fb1c2cae070b17e740e54d0587d764a1a52d03272d8a3d1c82c518
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a large number of embedded external links, indicating a link farm or phishing lure. The primary heuristic firing, PDF_SEO_LINK_FARM, confirms the presence of numerous external PDF links, with the first identified link being http://blackbeardmarketing.com/uploads/1/3/0/2/130289233/bigopenam-godegajasa.pdf. No scripts were extracted from this sample.

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://blackbeardmarketing.com/uploads/1/3/0/2/130289233/bigopenam-godegajasa.pdf
    • http://competitivekarting.com/uploads/1/3/0/6/130621695/7245973.pdf
    • http://landscapedesign360.com/uploads/1/3/0/5/130539225/6143683.pdf
    • http://pebibomam.graphicgeekworld.online/uploads/2020/01/28/tixifijosov.pdf
    • http://marchharesalon.com/uploads/1/3/0/4/130476798/bugadit.pdf
    • http://msuaiaa.weebly.com/uploads/1/3/0/6/130604495/1068825.pdf
    • http://fejokuzu.stapmstore.ru/uploads/2020/01/27/rozufez.pdf
    • http://fug.skiandtraks.com/uploads/2020/01/28/benekofagerevowawib.pdf
    • http://vajo.baksmans.club/uploads/2020/01/29/gopunigubomovebajuja.pdf
    • http://safebeautymovement.org/uploads/1/3/0/6/130639635/130639635.html#mamma+mia+lyrics+spanish

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000120a.bin
c922f099ab02c57bafb8291f24a3bb913e61fa0f58de569abdb94c1929f40584		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120A 8780 bytes

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